Plated steel sheet having excellent adhesion property and manufacturing method therefor

Abstract

The present invention relates to a plated steel sheet, which can be used for vehicles, home appliances, construction materials and the like, and to a method for manufacturing the plated steel sheet.

1 . A plated steel sheet having excellent adhesion property, the plated steel sheet comprising a base sheet, a plating layer formed on the base sheet, and a bonding layer formed between the base sheet and the plating layer, wherein the bonding layer has a columnar structure. 
     
     
         2 . The plated steel sheet of  claim 1 , wherein the bonding layer has porosity. 
     
     
         3 . The plated steel sheet of  claim 1 , wherein the bonding layer has a thickness greater than 0.5 μm. 
     
     
         4 . The plated steel sheet of  claim 1 , wherein the bonding layer comprises at least one selected from the group consisting of zinc (Zn), aluminum (Al), silicon (Si), chromium (Cr), nickel (Ni), titanium (Ti), niobium (Nb), and molybdenum (Mo). 
     
     
         5 . The plated steel sheet of  claim 1 , wherein the plating layer comprises at least one selected from the group consisting of a Zn plating layer, an Al plating layer, a Ni plating layer, a Mg plating layer, a Zn—Mg alloy plating layer, an Al—Mg alloy plating layer, a Zn—Ni alloy plating layer, a Zn—Fe alloy plating layer, and a Zn—Mg—Al alloy plating layer. 
     
     
         6 . A method for manufacturing a plated steel sheet having excellent adhesion property, the method comprising:
 preparing a base sheet;   forming a bonding layer having a columnar structure on the base sheet by a dry plating method; and   forming a plating layer on the bonding layer.   
     
     
         7 . The method of  claim 6 , wherein the dry plating method is a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method.